Dictionary > Synapomorphy

Synapomorphy

Definition
noun, plural: synapomorphies
An advance character state shared among two or more taxa inherited from the most recent common ancestor whose own ancestor in turn is inferred not to have such traits and is derived through evolution.
Supplement
Synapomorphies typify a given set of groups but firmly not all associates of a clade own a similar traits, it might shows a more modified version of traits.
It is a recent traits shared by two directly related groups of organisms like cats and dogs -snakes and lizards which primary showed in most modern shared ancestor.
Excellent examples of this are the lacks of legs in snakes, which belong to class Tetrapoda. A character state that is a synapomorphy for a clade, but for ancestry of this clade is plesiomorphy where it happens to changed in some lineages as underlying synapomorphy
Another case are the exceptionally tailored hind wings originate in all families of winged flies dipteran halteres wherein no other group of insects holding a similar makeup which convergently evolved halteres in place of fore wings.
Word Origin: syn = “with”, “together with” + apo = “away from” + morph = “shape
See also:
• cladistics
phylogeny
Compare:
• symplesiomorphy
homoplasy
Related terms:
apomorphy
• synapomorphic ( adjective)


You will also like...

river
Running Water Freshwater Communities

This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..

Population Regulation in an Ecosystem
Population Regulation in an Ecosystem

With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..

primitive arthropods
Arthropods

The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..

Body temperature regulation by the hypothalamus
Temperature Regulation in Animals

This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..

Lentic community
Freshwater Communities & Lentic Waters

Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

Early Earth
The Origins of Life

This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

Related Articles...

No related articles found

See all Related Topics